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<?php |
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namespace Zwartpet\PHPCertificateToolbox; |
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use Zwartpet\PHPCertificateToolbox\Exception\LogicException; |
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use Zwartpet\PHPCertificateToolbox\Exception\RuntimeException; |
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/** |
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* LetsEncrypt Functions class, supplying the LetsEncrypt Client with supportive functions. |
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* |
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* @author Youri van Weegberg <[email protected]> |
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* @copyright 2018 Youri van Weegberg |
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* @license https://opensource.org/licenses/mit-license.php MIT License |
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*/ |
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class LEFunctions |
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{ |
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/** |
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* Generates a new RSA keypair and returns both |
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* |
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* @param integer $keySize RSA key size, must be between 2048 and 4096 (default is 4096) |
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* @return array containing public and private indexes containing the new keys |
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*/ |
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public static function RSAGenerateKeys($keySize = 4096) |
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{ |
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if ($keySize < 2048 || $keySize > 4096) { |
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throw new LogicException("RSA key size must be between 2048 and 4096"); |
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} |
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$res = openssl_pkey_new([ |
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"private_key_type" => OPENSSL_KEYTYPE_RSA, |
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"private_key_bits" => intval($keySize), |
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]); |
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if (!openssl_pkey_export($res, $privateKey)) { |
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throw new RuntimeException("RSA keypair export failed!"); //@codeCoverageIgnore |
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} |
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$details = openssl_pkey_get_details($res); |
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$result = ['public' => $details['key'], 'private' => $privateKey]; |
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openssl_pkey_free($res); |
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return $result; |
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} |
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/** |
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* Generates a new EC prime256v1 keypair and saves both keys to a new file. |
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* |
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* @param integer $keySize EC key size, possible values are 256 (prime256v1) or 384 (secp384r1), |
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* default is 256 |
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* @return array containing public and private indexes containing the new keys |
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*/ |
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public static function ECGenerateKeys($keySize = 256) |
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{ |
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if (version_compare(PHP_VERSION, '7.1.0') == -1) { |
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throw new RuntimeException("PHP 7.1+ required for EC keys"); //@codeCoverageIgnore |
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} |
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if ($keySize == 256) { |
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$res = openssl_pkey_new([ |
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"private_key_type" => OPENSSL_KEYTYPE_EC, |
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"curve_name" => "prime256v1", |
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]); |
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} elseif ($keySize == 384) { |
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$res = openssl_pkey_new([ |
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"private_key_type" => OPENSSL_KEYTYPE_EC, |
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"curve_name" => "secp384r1", |
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]); |
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} else { |
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throw new LogicException("EC key size must be 256 or 384"); |
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} |
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if (!openssl_pkey_export($res, $privateKey)) { |
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throw new RuntimeException("EC keypair export failed!"); //@codeCoverageIgnore |
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} |
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$details = openssl_pkey_get_details($res); |
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$result = ['public' => $details['key'], 'private' => $privateKey]; |
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openssl_pkey_free($res); |
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return $result; |
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} |
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/** |
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* Encodes a string input to a base64 encoded string which is URL safe. |
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* |
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* @param string $input The input string to encode. |
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* |
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* @return string Returns a URL safe base64 encoded string. |
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*/ |
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public static function base64UrlSafeEncode($input) |
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{ |
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return str_replace('=', '', strtr(base64_encode($input), '+/', '-_')); |
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} |
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/** |
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* Decodes a string that is URL safe base64 encoded. |
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* |
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* @param string $input The encoded input string to decode. |
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* |
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* @return string Returns the decoded input string. |
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*/ |
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public static function base64UrlSafeDecode($input) |
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{ |
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$remainder = strlen($input) % 4; |
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if ($remainder) { |
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$padlen = 4 - $remainder; |
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$input .= str_repeat('=', $padlen); |
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} |
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return base64_decode(strtr($input, '-_', '+/')); |
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} |
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} |
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Zwartpet /
php-certificate-toolbox
